An elected politician, do they owe more allegiance to their party or their constituents?

To me and it doesn’t matter Canada or the states, once elected they seem to forget their constituents and tow the line of their party and lobbyists.
They seem to forget it’s their constituents that put them there, they just seem to remember on election years and that’s about it.

Their constituents.

It is allegiance to THEMSELVES which determines ALL priorities. As such, a politician’s constituents should come first. The party’s priority is to convince the politician’s constituents that the interests of the party, the politician and constituents magicallly coincide. The constituents have priority when it comes to being elected, but between elections they can go climb a tree. It is the party that must be assuaged for survival.

Neither. In the US, our leaders swear to defend and be ally to the constitution, and that seems about right.

Their constituents.

Theoretically – their constituents.

In reality, they listen to the people who pay for their reelection – which most often means the people in their party with deep pockets.

Real politics is 180 degrees different from politics as described in Civics books.

They’re supposed to represent their constituents.

Instead most of them represent whoever manipulates them the most, maybe usually via their party, but parties are also manipulated by oligarchic forces (mega-corporations, the ultra-rich, their agents, etc).

Actually @smashley is correct and that’s what we swear to do, uphold the Constitution.

There is never going to be a constituent poll to make all your votes 100% what the majority of constituents want. So you vote your conscience. The people SHOULD elect you based on your voting history and platform.